If your family is based upon man’s law, then you will have mothers-in-law, fathers-in-law, sisters-in-law, brothers-in-law, daughters-in-law, and sons-in-law.
If your family is based upom God’s family law, then you will describe family members using words like my son’s wife, my daughter’s husband, my son’s mother or father, etc.
Is your family permanent or tempoporary?